Motor Seal-in Failure Alarm - The Motor Seal-in Failure Alarm is actuated on the second
occurrence (either direction) of a tapchange coincident with no motor seal-in current
detected for 15 seconds. This alarm can be reset by the user from the Human Machine
Interface (HMI), from the TCC600® "Alarms" dialog screen or via SCADA. The alarm
is also reset when a successful tapchange operation occurs (motor seal-in current detected)
in either direction.
Alarm Active
MTR SEAL-IN FAILURE
Motor Seal-in Failure Block - The Motor Seal-in Failure Block is actuated on the second
occurrence of a tapchange coincident with no motor seal
‑
in current detected for 15
seconds in either direction. The block will be in effect in the direction that produced the
second Motor Seal-in Failure occurrence. If a Motor Seal-in Failure is detected in the
opposite direction, then operation will be blocked in that direction also.
This Block can be reset by the user from the HMI, from the TCC600 "Alarms" dialog
screen or via SCADA. The block is also reset when a successful tapchange operation
occurs (motor seal-in current is detected) in the opposite direction.
The internal accumulator that counts the occurrences of failed tapchanges is stored in
volatile memory and is set to zero when a loss of power occurs and the unit is not equipped
with a backup power supply. This is considered normal operation of the feature.
3.24.1
Resetting motor seal-in failure alarm block from the HMI
1.
Press the Down Arrow (CNFG Hot Button) pushbutton to awaken the unit. The
menu will advance to "CONFIGURATION".
2.
Press the Down Arrow pushbutton once. The unit will display the following:
Tapchanger Type
3.
Press the Right or Left arrow pushbutton, as necessary, until "Programmable Alarm"
is displayed.
4.
Press the Down arrow, as necessary, until the following is displayed.
Clear Seal in Alarm
Ready Press ENTER
5.
Press the ENT pushbutton. If prompted, enter a valid Level 2 Access Code. The
following will be displayed:
Confirm press ENTER
Cancel press EXIT.
6.
Press the ENT pushbutton. The following sequence of screens will be displayed:
Confirm press ENTER Cleared
Clear Seal in Alarm Ready Press ENTER
Section 3
1VAC388793-MB A
Operation
114
TCC300
User Manual
Summary of Contents for TCC300
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